div.a{
	background:url('../imgs/背景1.jpg');
	background-size: 100%;
	background-repeat: no-repeat;
	width: 100%;
    height: 960px;
}
div.b{
	border-radius: 20px;
	width: 760px;
	height: 540px;
	background-color: rgba(185,227,229,0.8);
	margin-left: 26%;
	margin-top: 60px;
}
div.c{
	line-height: 25px;
}
.d{
	text-indent:60px;
}
.e{
	text-indent:100px;
}
p.f{
	text-align: center;
	font-weight: bolder;
	font-size: 42px;
}